Video display control methods and apparatuses and display devices

ABSTRACT

Various video display control methods and apparatuses and various display devices are disclosed. A method comprises: acquiring interframe differences between every two adjacent frames in at least two adjacent video frames in sequence of a video, adjusting a display image distance of at least one video frame in the at least two video frames according to respective interframe differences, and controlling the display device to display the at least one video frame at least according to the adjusted display image distance of the at least one video frame. A visual effect and user experience can be thereby improved.

RELATED APPLICATION

The present application claims the benefit of priority to Chinese PatentApplication No. 201510290796.3, filed on May 30, 2015, and entitled“Video Display Control Methods and Apparatuses and Display Devices”,which application is hereby incorporated into the present application byreference herein in its entirety.

TECHNICAL FIELD

The present application relates to the technical field of display, and,for example, to various video display control methods and apparatusesand various display devices.

BACKGROUND

With continuous development of display technologies, types of displaydevices are developed continuously, for example, continuous developmentof novel display devices such as a 3D display, a near-to-eye displaydevice and a light field display, and diversified applicationrequirements are met.

In certain situations, difference of different video frames comprised ina video affects a visual effect of its displayed content, for example,difference of different video frames possibly causes phenomena such as astuck screen, lag, judder, and trailing during video display of thedisplay device, and a poor visual effect is caused.

SUMMARY

The following briefly describes the present application, so as toprovide a basic understanding of some aspects of the presentapplication. It should be understood that, the brief description is notan exhaustive brief description of the present application. Thedescription is neither intended to determine key or important parts ofthe present application, nor intended to limit the scope of the presentapplication. An objective thereof is merely to give some concepts in asimplified manner as a preface for more detailed descriptionhereinafter.

The present application provides various video display control methodsand apparatuses and various display devices.

In a first aspect, an embodiment of the present application provides avideo display control method, comprising:

acquiring interframe differences between every two adjacent frames in atleast two adjacent video frames in sequence of a video;

adjusting a display image distance of at least one video frame in the atleast two video frames according to respective interframe differences;and

controlling a display device to display the at least one video frame atleast according to the adjusted display image distance of the at leastone video frame.

In a second aspect, an embodiment of the present application furtherprovides a video display control apparatus, comprising:

an interframe difference acquiring module, configured to acquireinterframe differences between every two adjacent frames in at least twoadjacent video frames in sequence of a video;

a display image distance adjusting module, configured to adjust adisplay image distance of at least one video frame in the at least twovideo frames according to respective interframe differences; and

a first display control module, configured to control the display deviceto display the at least one video frame at least according to theadjusted display image distance of the at least one video frame.

In a third aspect, an embodiment of the present application alsoprovides a near-to-eye display device, comprising:

a processor, a communication interface, a memory and a communicationbus; the processor, the communication interface and the memorycommunicate with one another by the communication bus;

the memory is configured to store at least one command; the commandcauses the processor to perform following operations:

acquiring interframe differences between every two adjacent frames in atleast two adjacent video frames in sequence of a video;

adjusting a display image distance of at least one video frame in the atleast two video frames according to respective interframe differences;and

displaying the at least one video frame at least according to theadjusted display image distance of the at least one video frame.

According to the technical solutions provided by embodiments of thepresent application, association between an interframe differencebetween at least two adjacent video frames and a display image distancein a video is established, the display image distance of thecorresponding video frame is pertinently adjusted at least according tothe interframe difference, and the corresponding video frame isdisplayed at least according to the adjusted display image distance,thereby a visual effect and user experience are improved.

The following describes in detail alternative embodiments of the presentapplication with reference to accompanying drawings, to make these andother advantages of the present application more obvious.

BRIEF DESCRIPTION OF THE DRAWINGS

The present application may be understood better with reference to thefollowing description in combination with accompanying drawings, whereina same or similar accompanying drawing mark is used in all theaccompanying drawings to represent a same or similar component. Theaccompanying drawings together with the following detailed descriptionare comprised in the specification and constitute a part of thespecification, and are used to further illustrate alternativeembodiments of the present application and explain the principle andadvantages of the present application. In the accompanying drawings:

FIG. 1 is a flowchart of a video display control method according to anembodiment of the present application;

FIG. 2 is a logical block diagram of a first video display controlapparatus according to an embodiment of the present application;

FIG. 3 is a logical block diagram of a second video display controlapparatus according to an embodiment of the present application;

FIG. 4 is a logical block diagram of a third video display controlapparatus according to an embodiment of the present application;

FIG. 5 is a logical block diagram of a display device according to anembodiment of the present application.

A person skilled in the art should understand that, elements in theaccompanying drawings are merely shown for simplicity and clarity, andare not necessarily drawn to scale. For example, in the accompanyingdrawings, the size of an element may be enlarged relative to anotherelement, so as to facilitate enhancing an understanding of theembodiments of the present application.

DETAILED DESCRIPTION

The following will describe in details illustrative embodiments of thepresent application with reference to accompanying drawings. For thepurpose of clear and brief description, the specification does notdescribe all features of example embodiments. However, it should beunderstood that, many decisions specific to the example embodiments canbe made during development of any one of the practical embodiments, soas to achieve a specific objective of a developer, for example,conformance to restrictive conditions related with a system and service,wherein the restrictive conditions may vary with different embodiments.In addition, it should also be understood that, although developmentwork may be very complex and time-consuming, for a person skilled in theart that benefits from the content of the present disclosure, thedevelopment work is only a routine task.

Another point that should be noted here is, to avoid the presentapplication from being not clearly understood due to unnecessarydetails, the accompanying drawings and specification merely describeapparatus structures and/or processing steps closely related to thesolutions of the present application, but omit the representation anddescription of parts and processing that have little relation with thepresent application, and have been known by a person of ordinary skillin the art.

The following further describes in detail example embodiments of thepresent application with reference to the accompanying drawings (a samelabel represents a same element in several accompanying drawings) andembodiments. The following embodiments are used to describe the presentapplication, but are not intended to limit the scope of the presentapplication.

A person skilled in the art may understand that, terms such as “first”and “second” in the present application are merely used to distinguishdifferent steps, devices or modules, which neither represent anyspecific technical meaning, nor represent a necessary logic sequenceamong them.

FIG. 1 is a flowchart of a video display control method according to anembodiment of the present application. The video display control methodprovided by this embodiment of the present application may be executedby certain video display control apparatus, and the video displaycontrol apparatus can perform display control by executing the videodisplay control method, comprising but not limited to before or duringvideo display. There is no limit to the manners in which the videodisplay control apparatus is embodied. For example, the video displaycontrol apparatus may be an independent part, and the part cooperateswith a display device in communication; or the video display controlapparatus may be a functional module integrated in a display device,etc., which is not limited in this embodiment of the presentapplication.

Specifically, as shown in FIG. 1, a video display control methodprovided by this embodiment of the present application comprises:

S101: Acquiring interframe differences between every two adjacent framesin at least two adjacent video frames in sequence of a video;

S102: Adjusting a display image distance of at least one video frame inthe at least two video frames according to respective interframedifferences; and

S103: Controlling the display device to display the at least one videoframe at least according to the adjusted display image distance of theat least one video frame.

For an embodiment of the present application, for a video to bedisplayed, display image distances of respective video frames comprisedin the video generally adopt default display image distances, anddisplay image distances of different video frames are basically same.However, in certain conditions, certain video may comprise multiplescenes with large differences, or certain video may have related contentof movement information of one or more display objects, and the like,which causes the interframe difference between two adjacent video framesin the video to be overlarge, for example, two different video framesrespectively correspond to contents of different scenes, or, the samedisplay object in the two adjacent video frames has overhigh movementspeed, etc. In these situations, limited to reasons such as dataprocessing capacity, of the video display control apparatus and splitvision persistence of a display device, phenomena such as a stuckscreen, lag, judder, and trailing during video display of the displaydevice may occur during video display, and a visual effect of a user ispoor.

Research shows that in terms of visual features of eyes, the eyes arerelatively sensitive to display content closer to the eyes and areinsensitive to the display content farther away from the eyes. Forexample, for the same display detail of the display content, the displaycontent is respectively displayed at a first position closer to the eyesand a second position farther away from the eyes, the visual resolutionof the eyes to the detail of the display content at the first positionis higher than the visual resolution of the eyes to the detail of thedisplay content at the second position. Considering this, according tothe technical solutions provided by the embodiments of the presentapplication, association between an interframe difference between atleast two adjacent video frames and a display image distance in a videois established, the display image distance of the corresponding videoframe is pertinently adjusted at least according to the interframedifference, and the corresponding video frame is displayed at leastaccording to the adjusted display image distance, thereby a visualeffect and user experience are improved.

For example, in the technical solution provided by the embodiment of thepresent application, by a display manner of increasing the display imagedistance of a corresponding video frame, uncomfortable visual perceptionof the user possibly caused by the overlarge interframe difference canbe weakened to certain extent, that is to say, the visual perception ofthe eyes to display effects such as a stuck screen, lag, judder ortrailing possibly caused by the overlarge interframe difference isweakened to certain extent by adjusting the display image distance,thereby a visual effect and user experience are improved.

For another example, in the technical solution provided by theembodiment of the present application, by a display manner of reducing adisplay image distance of a corresponding video frame, an immersivevisual effect and experience of the user to the content displayed by thedisplay device in situations with smaller interframe difference and thelike can be adjusted.

The display image distance of any video frame is the distance between animage of the video frame through an optical part of the display deviceand the optical part. In technical solution provided by the embodimentof the present application, display image distances corresponding todifferent video frames in certain video may be different, in the videodisplay process of the display device, optical parameters of the displaydevice are adjusted to match with the display image distances ofdifferent video frames. Adjustment to the display image distance ofcertain video frame is equivalent to the adjustment of the distancebetween the image of the video frame displayed by the display device andthe eyes, comprising but not limited to increasing or reducing of anoriginal display image distance to meet diversified practicalapplication demands. The display image distance can be flexiblyadjusted, for example: the display image distances of different videoframes can be changed by adjusting optical parameters of the displaydevice, the optical parameters comprise but are not limited to focuslength and/or refractive index of the optical part; for another example,by content pretreatment of corresponding video frame, the content of thevideo frame is displayed to refocusing planes of different depths, forexample, displayed to the refocusing plane of the depth corresponding tothe display image distance of the video frame; for another example, thedisplay device can comprise different waveguide layers distributed alongthe depth direction, different waveguide layers are configured toreconfigure light field information of different depths of planes, eachwaveguide layer comprises a plurality of light splitters and aminiaturized micro curve reflector, incident light images aftertransmission of the waveguide layers, which is equivalent to rebuildingof light field information of the corresponding video frame on onespecific depth plane, by changing the waveguide layers for transmittingimaging light of different video frames, light field information ofcorresponding video frames can be reconfigured on different depths,thereby corresponding video frames are displayed by adopting pertinentdisplay image distances.

In the technical solution provided by the embodiment of the presentapplication, at least one video frame in the at least two video framescomprises any video frame in the at least two video frames. Optionally,the at least one video frame in the at least two video frames comprises:at least one former video frame in the at least two video frames and/orat least one latter video frame in the at least two video frames. Theformer video frame and the latter video frame are relative concepts, forthe N (N is an integer larger than 1) continuously distributed videoframes in the video, besides the last video frame in the N video frames,other respective video frames can form the former video frame in certainsituations, similarly, besides the first video frame in the N videoframes, other respective video frames can form the latter video frame incertain situations, for example, for the two adjacent video frames insequence, the first video frame is the former video frame, and thesecond video frame is the latter video frame.

The at least two adjacent video frames in sequence in a video cancomprise the situation of two adjacent video frames in the video andalso comprise the situation of three adjacent video frames in sequenceor more than three video frames in the video. In a practical applicationprocess, the interframe difference between every two adjacent videoframes in respective video frames comprised in certain time window canbe determined by a time window sliding-similar manner according to timesequence, and a display image distance of at least one frame in the atleast two video frames is determined according to respective interframedifferences. For example, for N adjacent video frames {1, 2 . . . N−2,N−1, N} in sequence in a video, the interframe differences □_(1,2),□_(2,3) . . . □_(N-2,N-1), □_(N-1,N) between every two adjacent videoframes in the N video frames are respectively calculated, the displayimage distance of certain video frame can be adjusted according to oneor more determined interframe differences, for example, the display magedistance of the first video frame can be adjusted according to theinterframe difference □_(1,2) between the first and second video frames,and can also be adjusted according to a content change tendencyreflected by the multiple interframe differences □_(1,2), □_(2,3) . . .□_(N-2,N-1), □_(N-1,N), etc., and a realizing manner is very flexible.

After the adjusted display image distance of certain video frame isdetermined, the display device is controlled to display the at least onedisplay object at least according to the adjusted display imagedistance. Optionally, controlling the display device to display the atleast one video frame at least according to the adjusted display imagedistance of the at least one video frame comprises: controlling thedisplay device to display the at least one video frame in a zoomingmanner at least according to the adjusted display image distance of theat least one video frame. In the solution, adjustment of the displayimage distance in a depth direction of the video frame and the zoomingdisplay of the content of the video frame are combined, which isfavorable for fully using visual features of the eyes to reduce as muchas possible or eliminate the eye visual discomfort caused by displaychange in the depth direction.

Specifically, adjustment of the display image distance is equivalent tothe increment or reduction of a display distance in the depth direction,if the change of the display image distance of the corresponding videoframe is small or the user does not mind the eye visual discomfortcaused by the display change and the like, the corresponding video frameis displayed according to the adjusted display image distance. But, incertain situation, further adjustment is required to relieve or eveneliminate the eye visual discomfort possibly caused by change of thedisplay image distance, for example, if change of the display imagedistance of the corresponding video frame is larger, or the eye visualdiscomfort caused by the change of the display image distance is hopedto be reduced as much as possible in practical application, optionally,zooming display of content of the corresponding video frame is combinedfor visual feeling adjustment, to cause eyes of the user to not see suchchange in the depth direction as much as possible, thereby the eyevisual discomfort caused by the display change in the depth direction isweakened as much as possible or eliminated.

Optionally, the adjusted display image distance of the at least onevideo frame is larger than the display image distance before adjusting,the controlling the display device to display the at least one videoframe in a zooming manner at least according to the adjusted displayimage distance of the at least one video frame comprises: controllingthe display device to display the at least one video frame in a zoomingin manner at least according to the adjusted display image distance ofthe at least one video frame. In the solution, the farther display ofthe at least one video frame and the zooming in display are combined, onone aspect, the eye visual discomfort possibly caused by the overlargeinterframe difference of every two adjacent video frames is weakened oreven offset by a manner of farther display of the at least one videoframe, on the other aspect, by using a near-large-far-small eye visualfeature, by zooming in display of the visual effect, that the at leastone video frame is closer to the eyes, caused to the eyes, visualperception of the eyes in the depth direction caused by actual fartherdisplay of the at least one video frame is relieved to certain extent oreven offset, thereby the visual discomfort possibly caused by theadjusting of the display image distance is relieved or even eliminated,and further it is favorable for improving visual effect and userexperience.

Optionally, the adjusted display image distance of the at least onevideo frame is smaller than the display image distance before adjusting,the controlling the display device to display the at least one videoframe in a zooming manner at least according to the adjusted displayimage distance of the at least one video frame comprises: controllingthe display device to display the at least one video frame in a zoomingout manner at least according to the adjusted display image distance ofthe at least one video frame. In the solution, the closer display of theat least one video frame and the zooming out display are combined, onone aspect, a visual immersing feeling of the corresponding video framecontent displayed by the display device is increased in a manner ofcloser display of the at least one video frame, and visual effect anduser experience are improved, on the other aspect, by using anear-large-far-small eye visual feature, by zooming out display of thevisual effect, that the at least one video frame is farther away fromthe eyes, caused to the eyes, the visual perception of the eyes in thedepth direction caused by actual closer display of the at least onevideo frame is relieved to certain extent or even offset, thereby thevisual discomfort possibly caused by the adjusting of the display imagedistance is relieved or even eliminated, and further it is favorable forimproving the visual effect and user experience.

Optionally, the controlling the display device to display the at leastone video frame in a zooming manner at least according to the adjusteddisplay image distance of the at least one video frame comprises:determining a zooming ratio parameter of the at least one video frameaccording to the display image distance before and after adjusting ofthe at least one video frame; and controlling the display device todisplay the at least one video frame according to the adjusted displayimage distance of the at least one video frame and the zooming ratioparameter. In the solution, the zooming ratio parameter corresponding tothe display of the video frame is determined in combination with thedisplay image distance before and after adjusting of the video frame,and zooming display control is performed accordingly, thereby, thevisual discomfort possibly caused by the adjusting of the display imagedistance is relieved or even eliminated, and it is favorable forimproving visual effect and user experience.

A pixel pitch of the display device is assumed as p_(d), the distancebetween an image of the content of certain video displayed through thedisplay device in space and the eyes is d_(o1), the multiplying times ofthe same display pixels on the plane of the image is M₁, if the numberof the display pixels corresponding to a display object is S₁, incertain situations, for example, the situation that the at least twoadjacent video frames in sequence comprise the same display object, fora user, in order to guarantee that the images of the same display objecton eye retinas are consistent in size, then it requires to meet:

p _(d) S ₁ M ₁ =p _(d) S ₂ M ₂  (1)

wherein,

${M_{1} = {1 + \frac{d_{o\; 1} - d_{e}}{f_{1}}}},\mspace{14mu} {M_{2} = {1 + \frac{d_{o\; 2} - d_{e}}{f_{2}}}},$

S₂ is the number of display pixels corresponding to the display objectafter the display image distance of the corresponding video frame isadjusted, and the multiplying times of the same display pixels on theplane where the image of the display object of the corresponding videoframe after the display image distance is positioned is M₂. Throughformula transformation, a zooming ratio parameter R_(m) is:

$\begin{matrix}{R_{m} = {\frac{s_{2}}{s_{1}} = \frac{f_{2}\left( {f_{1} + d_{o\; 1} - d_{e}} \right)}{f_{1}\left( {f_{2} + d_{o\; 2} - d_{e}} \right)}}} & (2)\end{matrix}$

The solution is adopted to determine the zooming ratio parameter ofcontent display of corresponding video frame and perform display controlaccordingly, which is favorable for compensating a user visual effectcaused by the adjusting of the display image distance through using theeye near-large-far-small visual feature, thereby it is favorable forrelieving or even eliminating the visual perception of the user in thedepth direction possibly caused by the adjusting of the display imagedistance, and improving the visual effect and user experience.

In a practical application process, respective interframe differencescan be compared with certain preset condition respectively, anddifferent strategies for adjusting the display image distance can beadopted according to a comparison result, to improve universality andflexibility of the solution. Optionally, the adjusting the display imagedistance of at least one video frame in at least two video framesaccording to the respective interframe differences comprises: adjusting,responding to the respective interframe differences to meet one presetcondition respectively, the display image distance of the at least onevideo frame to cause the display image distance of the video frame to belarger the display image distance before adjusting. The respectiveinterframe differences between every two adjacent video frames in atleast two adjacent video frames in sequence in a unit time window canreflect the change tendency of the video content in the time windowalong with time to certain extent. If respective interframe differencesmeet the preset condition, it is indicated that the change tendency ofthe video content in the time window along with time is relativelystable, then the display image distance of the at least one video frameis adjusted to cause the display image distance of the at least onevideo frame to be larger than the display image distance beforeadjusting. The solution is equivalent to that in a practical displayprocess, the corresponding video frame is displayed at certain positionfarther away from the display image distance before adjusting, therebyby using the feature that the eyes have lower visual resolution for afarther display content, the uncomfortable perception possibly causedwhen the eyes see the corresponding video frame is weakened, thereby aviewing effect and user experience are improved. If the at least oneinterframe difference in respective interframe differences does not meetthe preset condition, then it is indicated that the change tendency ofthe video content in the time window along with time is not stable, thenthe display image distance of the corresponding video frame is notadjusted, thereby the eye visual discomfort possibly caused by thefrequent adjusting of the display image distances of different videoframes in a period of time is avoided.

In the technical solution provided by the embodiment of the presentapplication, the interframe difference between any two adjacent videoframes shows difference degree of the display content corresponding tothe two adjacent video frames, in a practical application process,different parameters can be selected to show the interframe differenceas required, which is not limited by this embodiment of the presentapplication.

(1) Optionally, the interframe difference between any two adjacent videoframes in the at least two video frames comprises: optical parameterdifference of pixels at multiple corresponding positions in the twoadjacent video frames. The pixels at the corresponding positions in thetwo adjacent video frames comprise but are not limited to the pixelscorresponding to same positions or same index numbers in the twoadjacent video frames, the optical parameter difference of the pixels atrespective corresponding positions reflects the interframe differencebetween the two adjacent video frames to certain extent, and the opticalparameter difference is easier to capture and quantify, thereby,realizing complexity of the solution is favorably reduced.

Optionally, the optical parameters comprise at least one of following:brightness, chroma, and saturation degree; change of the brightness,chroma, and/or saturation degree can better reflect the interframedifference of two adjacent video frames. A preset condition based on theoptical parameter difference and used for triggering a display imagedistance determining strategy is determined according to actual demands,which is not limited in this embodiment of the present application,optionally, the preset condition comprises at least one of following:

(11) A pixel number of the optical parameter difference exceeding anoptical parameter threshold exceeds a pixel number threshold.

(12) A first specific value of the pixel number of the optical parameterdifference exceeding an optical parameter threshold to the total numberof the single frame pixels exceeds a pixel ratio threshold.

(13) A non-continuously distributed region number of pixels of theoptical parameter difference exceeding an optical parameter thresholdexceeds a region number threshold.

(14) A continuously distributed maximal region area of the pixels of theoptical parameter difference exceeding an optical parameter thresholdexceeds an area threshold.

(15) A second specific value of the continuously distributed maximalregion area of the pixels of the optical parameter difference exceedingan optical parameter threshold to a single frame total area exceeds anarea ratio threshold.

Above respective preset conditions can be independently usedrespectively, and can be combined for use to better capture and quantifythe interframe difference of two adjacent video frames, and a realizingmanner is very flexible. Specifically, the optical parameter differencecomprises but is not limited to brightness difference, chroma differenceand/or saturation degree difference. The brightness difference of thecorresponding positions of the two adjacent video frames reflects theTemporal Perceptual Information (TI) of the video, a reason of thebrightness difference of the corresponding positions of the two adjacentvideo frames comprises but is not limited to at least one of following:content difference of the corresponding positions of the two adjacentvideo frames, damage to the video content caused by a network factor,etc., which is not limited in this embodiment of the presentapplication, the damage to the video content caused by the networkfactor comprises but is not limited to incomplete transmission orreceiving of the content corresponding to the video frame, and the like.The following takes the brightness difference as an example fordescription, and a realizing manner of other optical parameterdifferences is similar and is not repeated herein.

For example, a preset condition comprises: a pixel number of thebrightness difference exceeding a bright threshold value exceeds a pixelnumber threshold. In terms of two adjacent video frames, brightness ofthe pixels of the same index numbers or same positions of the twoadjacent video frames can be compared to obtain the brightnessdifference of respective corresponding pixels of the two adjacent videoframes; the continuous difference corresponding to respective pixels iscompared with the brightness threshold to determine the pixel number ofthe brightness difference exceeding the brightness threshold; then thepixel number and the pixel number threshold are compared, if the pixelnumber exceeds the pixel number threshold, then the brightnessdifference between the two adjacent video frames meets the presetcondition, and it is indicated to some extent that the two adjacentvideo frames have larger difference; otherwise, the brightnessdifference between the two adjacent video frames does not meet thepreset condition, and it is indicated to some extent that the twoadjacent video frames have smaller difference. In the solution, theinterframe difference between two adjacent video frames is reflected bycounting the pixel number of the optical parameters such as thebrightness, therefore, time complexity between the two video frames isbetter reflected to correspondingly adjust the display image distance ofthe video frame, and the solution is easy to realize.

For another example, the preset condition comprises: a first specificvalue of the pixel number of the brightness difference exceeding abrightness threshold to the single pixel total number exceeds a pixelratio threshold. In terms of any two adjacent video frames, the pixelnumber of the brightness difference exceeding a brightness threshold inthe two adjacent video frames can be acquired to determine a specificvalue of the pixel number to the single frame pixel total number (calledas a first specific value), the first specific value is compared withthe pixel threshold, if the first specific value exceeds the pixel ratiothreshold, it is indicated to some extent that the two adjacent videoframe have larger difference; otherwise, the brightness differencebetween the two adjacent video frames does not meet the preset conditionand it is indicated to some extent that the two adjacent video valueshave smaller difference.

For another example, the preset condition comprises: a non-continuouslydistributed region number of pixels of the brightness differenceexceeding a brightness threshold exceeds a region number threshold. Interms of two adjacent video frames, the pixels of the brightnessdifference exceeding a brightness threshold in the two adjacent videoframes can be acquired, according to the fact whether the spatialpositions of the different pixels are adjacent or not, a distributioncondition of these pixels can be determined, the region where themultiple pixels with adjacent spatial positions are is regarded as acontinuously distributed region of a part of pixels, viewed as a whole,the continuously distributed region number of the multiple parts ofpixels is equivalent to the non-continuously distributed region numberof the pixels of the brightness difference exceeding the brightnessthreshold. Then, the non-continuously distributed region number of thepixels of the brightness difference exceeding the brightness thresholdis compared with the region number threshold, if the non-continuouslydistributed region number of the pixels of the brightness differenceexceeding a brightness threshold exceeds the region number threshold,the preset condition is met, and it is indicated to some extent that thetwo adjacent video frames have more regions with difference; otherwise,the preset condition is not met and it is indicated to some extent thatthe two adjacent video frames have less regions with difference. In thesolution, a distribution condition that the pixels of the brightnessdifference exceeding a brightness threshold is used as a judgmentfactor, and it is favorable to improve the judging accuracy of theinterframe difference of the two adjacent video frames.

For another example, the preset condition comprises: the continuouslydistributed maximal region area of the pixels of the brightnessdifference exceeding a brightness threshold value exceeds an areathreshold. In terms of two adjacent video frames, continuouslydistributed respective regions of the pixels of the brightnessdifference exceeding a brightness threshold in the two adjacent videoframes can be acquired, the maximal region area is determined, and iscompared with the area threshold, if the maximal region area is largerthan the area threshold, the preset condition is met, and it isindicated to some extent that the two adjacent video frames have largerareas with continuous difference; otherwise, the preset condition is notmet, it is indicated to some extent that the two adjacent video frameshave less areas with continuous difference. In the solution, thecontinuously distributed maximal region area of the pixels of thebrightness difference exceeding a brightness threshold is used as ajudgment factor, and it is favorable to improve the judging accuracy ofthe interframe difference of the two adjacent video frames.

For another example, the preset condition comprises: a second specificvalue of the continuously distributed region area of the pixels of thebrightness difference exceeding a brightness threshold to a single frametotal area exceeds an area ratio threshold. In terms of two adjacentvideo frames, the continuously distributed maximal region area of thepixels of the brightness difference exceeding the brightness thresholdin the two adjacent video frames can be acquired, the specific value(called as a second specific value) of the maximal region areaaccounting for the distributed total area of respective single framepixels is determined, the second specific value is compared with thearea ratio threshold, if the second specific value exceeds the arearatio threshold, the preset condition is met, and it is indicated tosome extent that the two adjacent video frames have a larger proportionof areas with continuous difference; otherwise, the preset condition isnot met, and it is indicated to some extent that two adjacent videoframes have a small proportion of areas with continuous difference. Inthe solution, an area proportion of the continuously distributed maximalregion area of the pixels of the brightness difference exceeding abrightness threshold is used as a judgment factor, and it is favorableto improve the judging accuracy of the interframe difference of the twoadjacent video frames.

If the time window comprises three or more than three video frames, theabove method can be adopted to respectively determine whether thebrightness difference between every two adjacent video frames meets theone or more preset conditions, and a corresponding display imagedistance adjusting strategy is adopted according to a determiningresult, for example, the respective brightness differences between theevery two adjacent video frames respectively meet the correspondingpreset conditions, the display image distance of at least one videoframe can be increased to weaken the visual perception of the eyes tothe video frames with overlarge brightness difference by a manner offarther display of the corresponding video frames; and/or at least oneof the brightness differences between every two adjacent video framesdoes not meet the corresponding preset condition, the display imagedistance of the at least one video frame is kept unchanged to avoid theeye visual discomfort possibly caused by the frequent display imagedistance adjusting, or the display image distance of the at least onevideo frame can be properly reduced to increase a visual immersion ofthe user to the corresponding display content of the at least one videoframe; etc.

(2) Optionally, the interframe difference between any two adjacent videoframes in the at least two video frames comprises: displacement of theat least one display object between the two adjacent video frames. Thedisplacement of the same display object between the two adjacent videoframes reflects the movement information of the display object, if thedisplacement is larger, it is indicated to some extent that the movementof the display object in a refreshing time period of the two videoframes is faster, otherwise, if the displace is smaller or even zero, itis indicated to some extent that the movement of the display object in arefreshing time period of the two video frames is slower or evenrelatively still. In the solution, through the displacement of the samedisplay object between the two adjacent video frames, the movementinformation of the display object is convenient to capture and quantify,thereby realizing complexity of the solution is favorably reduced. Apreset condition based on the movement information difference such asdisplacement and used for triggering a display image distancedetermining strategy is determined according to actual demands, which isnot limited in this embodiment of the present application, optionally,the preset condition comprises at least one of following:

(21) the preset condition comprises: expected refreshing informationcorresponding to displacement exceeds the refreshing capacityinformation of the display device. In the solution, movement informationof a display object and the refreshing capability information arecombined to adapt to the display image distance of the same displayobject at different video frames, and improve adjusting pertinence andeffectiveness of the display image distance.

The refreshing capability information of the display device can be shownby a refreshing rate or period of the display device, if the displaydevice has multiple refreshing rates or periods, any one refreshing rateor period (for example the currently arranged refreshing rate or periodof the display device) can be adopted to show the refreshing capabilityinformation of display device, or, the highest refreshing rate orshortest refreshing period can be adopted as the refreshing capabilityof the display device, which is specifically determined according toapplication demands and is not limited in this embodiment of the presentapplication. An image of the display object through the display devicecan be positioned on a display scene of the display device, or, atcertain position in front of or behind the display screen of the displaydevice.

The displacement of certain display object between two adjacent videoframes is assumed as S₀, and the displacement of unit time is movementspeed v of the display object. Usually, relative displacement s_(d) ofthe image of the display object between the two adjacent video framesand saw by the eyes is smaller than certain threshold C (determinedaccording to an eye visual feature, a visual characteristic of a user,empirical data or the like) to ensure that the eyes cannot see thephenomena of picture judder, lag and trailing caused by movement of thedisplay object:

$\begin{matrix}{s_{d} = {{Rs}_{0} = {{\frac{f}{d_{0}}s_{0}} = {\frac{fv}{d_{0}t} \leq C}}}} & (3)\end{matrix}$

wherein,

$R = \frac{f}{d_{0}}$

is a zooming factor, f is an equivalent focus length of the image of thedisplay object in certain video frame through the display device, d₀ isthe distance between the image of the display object in certain videoframe through the display device and the eyes (for example, pupils ofthe eyes), t is the refreshing rate of the display device (refreshingperiod is 1/t). According to the displacement of the same display objectbetween the two video frames, the expected refreshing information (forexample, expected refreshing rate or period) of the formula (3) is met,the expected refreshing information and the refreshing capabilityinformation of the display device are compared, if the expectedrefreshing information exceeds the refreshing capability information ofthe display device (for example the expected refreshing rate is largerthan the maximal refreshing rate of the display device, or the expectedrefreshing period is smaller than the minimal refreshing period of thedisplay device), then the interframe difference of the two adjacentvideo frames should meet the preset condition, it is indicated that theprobability that the refreshing capability of the display deviceinsufficiently acquires a better visual effect of the correspondingvideo frame is larger; otherwise, the interframe difference between thetwo adjacent video frames cannot meet the preset condition, it isindicated that the probability that the refreshing capability of thedisplay device can support the corresponding video frame to acquire abetter visual effect is larger.

If certain time window comprises three or more than three video frames,the above method can be adopted to respectively determine whether thedisplacement of the same display object between every two adjacent videoframes meets the preset condition, and a corresponding display imagedistance adjusting strategy is adopted according to a determiningresult, for example, the respective displacements of the same displayobject between the every two adjacent video frames respectively meet thecorresponding preset conditions, the display image distance of at leastone video frame can be increased to weaken the visual perception of theeyes to movement information of the same display object in the adjacentvideo frames by a manner of farther display of the corresponding videoframes; and/or at least one of the respective displacements of the samedisplay object between every two adjacent video frames does not meet thecorresponding preset condition, the display image distance of the atleast one video frame is kept unchanged to avoid the eye visualdiscomfort possibly caused by the frequent display image distanceadjusting, or the display image distance of the at least one video framecan be reduced to increase a visual immersion of the user to thecorresponding display content of the at least one video frame; etc.

Optionally, the video display control method also comprises: adjusting,responding to the expected refreshing information to not exceed therefreshing capability information, the refreshing information of thedisplay device according to the expected refreshing information and therefreshing capability information; and controlling the display device todisplay the at least one video frame according to the adjustedrefreshing information. If the expected refreshing information does notexceed the refreshing capability information of the display device, itis indicated that by the adaption of refreshing information of thedisplay device in a refreshing capability range of the display device,the probability that the display device smoothly displays correspondingvideo frame of the at least one display object is larger, the displaydevice is adjusted to display corresponding video frame with largerrefreshing rate, to cause the refreshing rate of the display devicedisplaying the corresponding video frame to be larger than or equal toor close to as much as possible the expected refreshing rate, in thisway, through simple adaption of the refreshing information of thedisplay device, the application demand of visual smooth display of theat least one display object relative to the eyes can be met, eye visualdiscomfort is relieved to some extent or even eliminated, a viewingeffect and user experience are improved, the solution is simple and easyto realize and solution universality is improved.

(22) The preset condition comprises: the displacement exceeds allowablemovement information corresponding to the refreshing capabilityinformation of the display device. In the solution, the display imagedistance of the same display object at different video frames can beadaptively adjusted by combining the movement information of the displayobject and the refreshing capability information, and the adjustingpertinence and effectiveness of the display image distance are improved.

It can be obtained through transformation of formula (3) that:

$\begin{matrix}{d_{0} \geq \frac{fv}{Ct}} & (4)\end{matrix}$

Size of the display image distance of the display object in certainvideo is:

d _(s) =d ₀ −d _(e)  (5)

wherein, d_(s) is display image distance of certain video frame, andcontent of the video frame comprises certain display object; d_(e) isthe distance from the eyes to the display device (for example, thedistance from eye pupils to a lens optical center of the display deviceaffecting imaging of the display object, etc.). According to formula 4and formula 5, the allowable movement information corresponding to themaximal refreshing rate or minimal refreshing period of the displaydevice is determined, the allowable movement information is comparedwith the displacement of the same display object between two adjacentvideo frames, if the displacement is larger than allowable movementinformation, then the interframe difference between the two adjacentvideo frames meets the preset condition, it is indicated that theprobability that the refreshing capability of the display deviceinsufficiently acquires a better visual effect of the correspondingvideo frame is larger; otherwise, the interframe difference between thetwo adjacent video frames cannot meet the preset condition, it isindicated that the probability that the refreshing capability of thedisplay device can support the corresponding video frame to acquire abetter visual effect is larger.

If certain time window comprises three or more than three video frames,the above method can be adopted to respectively determine whether thedisplacement of the same display object between every two adjacent videoframes meets the preset condition, and a corresponding display imagedistance adjusting strategy is adopted according to a determiningresult, for example, the respective displacements of the same displayobject between the every two adjacent video frames respectively meet thecorresponding preset conditions, the display image distance of at leastone video frame can be increased to weaken the visual perception of theeyes to movement information of the same display object in the adjacentvideo frames by a manner of farther display of the corresponding videoframes, adjusting of the display image distance of the correspondingvideo frame can be performed according to limiting conditions of formula(4) and formula (5) to acquire a better visual effect; and/or at leastone of the respective displacements of the same display object betweenevery two adjacent video frames does not meet the corresponding presetcondition, the display image distance of the at least one video frame iskept unchanged to avoid the eye visual discomfort possibly caused by thefrequent display image distance adjusting, or the display image distanceof the at least one video frame can be properly reduced to increase avisual immersion of the user to the corresponding display content of theat least one video frame; etc.

Optionally, the video display control method also comprises: adjusting,responding to the displacement to not exceed the allowable movementinformation, the refreshing information of the display device accordingto the refreshing capability information; and controlling the displaydevice to display the at least one video frame according to the adjustedrefreshing information. If the displacement of the same display objectbetween the two adjacent video frames does not exceed the allowablemovement information, it is indicated to some extent that by theadaption of refreshing information of the display device in a refreshingcapability range of the display device, the probability that the displaydevice smoothly displays the corresponding video frame of the at leastone display object is larger, the display device is adjusted to displaycorresponding video frame with larger refreshing rate, in this way,through simple adaption of the refreshing information of the displaydevice, the application demand of visual smooth display of the at leastone display object relative to the eyes can be met, eye visualdiscomfort is relieved to some extent or even eliminated, a viewingeffect and user experience are improved, the solution is simple and easyto realize and solution universality is improved.

In the technical solution provided by the embodiment of the presentapplication, the display device comprises but is not limited to a lightfield display, a near-to-eye display, a 3D display, a projectiondisplay, a binocular display device and the like, which is not limitedby the embodiment of the present application. The imaging depth is to befelt by the binocular display device through binary disparity of leftand right eyes, thereby a user experiences a stereoscopic imagingeffect. In the situation of realizing the technical solution provided bythis embodiment of the present application, controlling the displaydevice to display the at least one video frame at least according to theadjusted display image distance of the at least one video framecomprises: according to the adjusted display image distance of the atleast one video frame, adjusting the binary disparity of the at leastone video frame displayed by the binocular display device; andcontrolling the binocular display device to display the at least onevideo frame according to the adjusted display image distance of the atleast one video frame and the adjusted binary disparity. The displayimage distance of certain display object in certain video frame and thebinary disparity of the display object have certain correspondingrelation, if the display image distance and the binary disparity are notmatched, eye visual discomfort may be caused due to larger differencebetween an actual accommodation distance and a convergence distance. Inthe solution, the binary disparity of the display object in thecorresponding video frame is adjusted according to the adjusted displayimage distance of the corresponding video frame, thereby, the visualdiscomfort of the user caused by the larger difference between theactual accommodation distance and the convergence distance due to thefact that the display image distance and the binary disparity are notmatched is reduced as much as possible, and the visual effect and userexperience are improved. Wherein, the binary disparity of the displayobject in the corresponding video frame can be determined by adoptingbut not limited to following formula:

$\begin{matrix}{d = \frac{fB}{Z_{c}}} & (6)\end{matrix}$

wherein, d is the adjusted binary disparity of the display object in thevideo frame, f is equivalent focus length, B is distance between centersof left and right displays in the binocular display device, Z_(c) isbinocular convergence distance corresponding to the adjusted displayimage distance of the display object, wherein:

$\begin{matrix}{{{{\frac{1}{Z_{d}} - \frac{1}{Z_{c}}}} \leq n},{\frac{1}{3} \leq n \leq \frac{2}{3}}} & (7)\end{matrix}$

Z_(d) is the display image distance of the display object at thecorresponding video frame. In practical application, n is any numbermeeting the condition of

${\frac{1}{3} \leq n \leq \frac{2}{3}},$

and implementation is flexible. Further, n can also be determinedaccording to duration of display time of the display object in thecorresponding video frame, for example,

$n = \frac{1}{3}$

so as to meet a diopter law to be met by the binocular 3D display, ifthe display time is shorter, then n can be increased, for example,

${n = \frac{2}{3}},$

etc. The solution is simple and easy to realize and it is favorable toacquire a better visual effect.

Further, before binary disparity adjusting, the video display controlmethod also comprises: according to the adjusted display image distanceof the at least one video frame and the binocular convergence distancecorresponding to the binary disparity before adjusting of the displayobject, determining whether triggering is required for binary disparityadjusting. In the technical solution provided by this embodiment of thepresent application, the display image distance of the video frame isthe display image distance of the display object in the video frame,optionally, triggering judgment of the binary disparity adjusting can beperformed based on following formula:

$\begin{matrix}{{{{\frac{1}{Z_{d}} - \frac{1}{Z_{c}^{\prime}}}} \leq n},{\frac{1}{3} \leq n \leq \frac{2}{3}}} & (8)\end{matrix}$

Z_(c)′ is a known binocular convergence distance corresponding to thebinary disparity before adjusting of the display object. If the formula(8) holds, it is indicated that the difference between focusing and theconvergence distance caused by the adjusting of the display imagedistance of the display object falls in an allowable range of the eyes,and in this situation, adaptive adjusting of the binary disparity maynot be performed to reduce the realizing complexity of the solution asmuch as possible on the basis of realizing a better visual effect, ifformula (8) does not hold, it is indicated that the adjusting of thedisplay image distance of the display object may cause an uncomfortableviewing experience, this situation can trigger the adjusting of thebinary disparity, for example, the binary disparity (namely the adjustedbinocular disparity d) corresponding to the adjusted display imagedistance can be determined by formulas (7) and (6).

It may be understood by a person skilled in the art that, in any one ofthe foregoing methods of example embodiments of the present application,the value of the serial number of each step described above does notmean an execution sequence, and the execution sequence of the stepsshould be determined according to the function and internal logicalthereof, and should not constitute any limitation to the implementationprocedure of the example embodiments of the present application.

FIG. 2 is a logical block diagram of a video display control apparatusaccording to an embodiment of the present application. As shown in theFIG. 2, the video display control apparatus provided by the embodimentof the present application comprises: an interframe difference acquiringmodule 21, a display image distance adjusting module 22 and a firstdisplay control module 23.

The interframe difference acquiring module 21 is configured to acquireinterframe differences between every two adjacent frames in at least twoadjacent video frames in sequence of a video.

The display image distance adjusting module 22 is configured to adjust adisplay image distance of at least one video frame in the at least twovideo frames according to respective interframe differences.

The first display control module 23 is configured to control the displaydevice to display the at least one video frame at least according to theadjusted display image distance of the at least one video frame.

According to the technical solutions provided by embodiments of thepresent application, association between an interframe differencebetween at least two adjacent video frames and a display image distancein a video is established, the display image distance of thecorresponding video frame is pertinently adjusted at least according tothe interframe difference, and the corresponding video frame isdisplayed at least according to the adjusted display image distance,thereby a visual effect and user experience are improved.

For example, in the technical solution provided by the embodiment of thepresent application, by a display manner of increasing a display imagedistance of a corresponding video frame, uncomfortable visual perceptionof the user possibly caused by the overlarge interframe difference canbe weakened to certain extent, that is to say, the visual perception ofthe eyes to display effects such as a stuck screen, lag, judder ortrailing possibly caused by the overlarge interframe difference isweakened to certain extent by adjusting the display image distance,thereby a visual effect and user experience are improved.

For another example, in the technical solution provided by theembodiment of the present application, by a display manner of reducing adisplay image distance of a corresponding video frame, an immersivevisual effect and experience of the user to the content displayed by thedisplay device in situations with smaller interframe different and thelike can be adjusted.

There is no limit to the manners in which the video display controlapparatus is embodied. For example, the video display control apparatusmay be an independent part, and the part cooperates with a displaydevice in communication; or the video display control apparatus may be afunctional module integrated in a display device, etc., which is notlimited in this embodiment of the present application.

At least one video frame in the at least two video frames comprises anyvideo frame in the at least two video frames. Optionally, the at leastone video frame in the at least two video frames comprises: at least oneformer video frame in the at least two video frames and/or at least onelatter video frame in the at least two video frames; at least twoadjacent video frames in sequence in a video can comprise the situationof two adjacent video frames in the video and also comprise thesituation of three adjacent video frames in sequence or more than threevideo frames in the video; and an application range of the technicalsolution provided by the embodiment of the present application is verybroad.

Optionally, as shown in FIG. 3, the first display control module 23comprises: a zooming display control submodule 231. The zooming displaycontrol submodule 231 is configured to control the display device todisplay the at least one video frame in a zooming manner at leastaccording to the adjusted display image distance of the at least onevideo frame. In the solution, adjustment of the display image distancein the depth direction of the video frame and the zooming display of thecontent of the video frame are combined, which is favorable for fullyusing visual features of the eyes to reduce as much as possible oreliminate the eye visual discomfort caused by display change in thedepth direction.

Optionally, the zooming display control submodule 231 comprises: azooming in display control unit 2311. The zooming in display controlunit 2311 is configured to control the display device to display the atleast one video frame in a zooming in manner at least according to theadjusted display image distance of the at least one video frame, whereinthe adjusted display image distance of the at least one video frame islarger than the display image distance before adjusting. In thesolution, the farther display of the at least one video frame and thezooming in display are combined, on one aspect, the eye visualdiscomfort possibly caused by the overlarge interframe difference ofevery two adjacent video frames is weakened or even offset by a mannerof farther display of the at least one video frame, on the other aspect,by using a near-large-far-small eye visual feature, by zooming indisplay of the visual effect, that the at least one video frame iscloser to the eyes, caused to the eyes, visual perception of the eyes inthe depth direction caused by actual farther display of the at least onevideo frame is relieved to certain extent or even offset, thereby thevisual discomfort possibly caused by the adjusting of the display imagedistance is relieved or even eliminated, and further it is favorable forimproving visual effect and user experience.

Optionally, the zooming display control submodule 231 comprises: azooming out display control unit 2312. The zooming out display controlunit 2312 is configured to control the display device to display the atleast one video frame in a zooming out manner at least according to theadjusted display image distance of the at least one video frame, whereinthe adjusted display image distance of the at least one video frame issmaller than the display image distance before adjusting. In thesolution, the closer display of the at least one video frame and thezooming out display are combined, on one aspect, a visual immersingfeeling of the corresponding video frame content displayed by thedisplay device is increased in a manner of closer display of the atleast one video frame, and visual effect and user experience areimproved, on the other aspect, by using a near-large-far-small eyevisual feature, by zooming out display of the visual effect, that the atleast one video frame is farther away from the eyes, caused to the eyes,the visual perception of the eyes in the depth direction caused byactual closer display of the at least one video frame is relieved tocertain extent or even offset, thereby the visual discomfort possiblycaused by the adjusting of the display image distance is relieved oreven eliminated, and further it is favorable for improving the visualeffect and user experience.

Optionally, the zooming display control submodule 231 comprises: azooming ratio parameter determining unit 2313 and a zooming displaycontrol unit 2314. The zooming ratio parameter determining unit 2313 isconfigured to determine a zooming ratio parameter of the at least onevideo frame according to the display image distance before and afteradjusting of the at least one video frame; the zooming display controlunit 2314 is configured to control the display device to display the atleast one video frame according to the adjusted display image distanceof the at least one video frame and the zooming ratio parameter. In thesolution, the zooming ratio parameter corresponding to the display ofthe video frame is determined in combination with the display imagedistance before and after adjusting of the video frame, and zoomingdisplay control is performed accordingly, thereby, the visual discomfortpossibly caused by the adjusting of the display image distance isrelieved or even eliminated, and it is favorable for improving visualeffect and user experience

The display device comprises but is not limited to a light fielddisplay, a near-to-eye display, a 3D display, a projection display, abinocular display device and the like, which is not limited by theembodiment of the present application. The imaging depth is felt by thebinocular display device through binary disparity of left and righteyes, thereby a user experiences a stereoscopic imaging effect. In thesituation of realizing the technical solution provided by thisembodiment of the present application, the first display control module23 comprises: a binary disparity determining submodule 232 and a binarydisparity display control submodule 233. The binary disparitydetermining submodule 232 is configured to according to the adjusteddisplay image distance of the at least one video frame, adjust thebinary disparity of the at least one video frame displayed by thebinocular display device; and the binary disparity display controlsubmodule 233 is configured to control the binocular display device todisplay the at least one video frame according to the adjusted displayimage distance of the at least one video frame and the adjusted binarydisparity. In the solution, the binary disparity of the display objectin the corresponding video frame is adjusted according to the adjusteddisplay image distance of the corresponding video frame, thereby, thevisual discomfort of the user caused by the larger difference between anactual accommodation distance and a convergence distance due to the factthat the display image distance and the binary disparity are not matchedis reduced as much as possible, and the visual effect and userexperience are improved.

As shown in FIG. 4, the display image distance adjusting module 22comprises: a display image distance adjusting submodule 221. The displayimage distance adjusting submodule 221 is configured to adjust,responding to respective interframe difference to respectively meet apreset condition, the display image distance of the at least one videoframe to cause the display image distance of the at least one videoframe to be larger than the display image distance before adjusting. Thesolution is equivalent to that in a practical display process, thecorresponding video frame is displayed at certain position farther awayfrom the display image distance before adjusting, thereby by using thefeature that the eyes have lower visual resolution for a farther displaycontent, the uncomfortable perception possibly caused when the eyes seethe corresponding video frame is weakened, thereby a viewing effect anduser experience are improved. If the at least one interframe differencein respective interframe differences does not meet the preset condition,then it is indicated that the change tendency of the video content inthe time window along with time is not stable, then the display imagedistance of the corresponding video frame may not be adjusted, therebythe eye visual discomfort possibly caused by the frequent adjusting ofthe display image distances of different video frames in a period oftime is avoided.

Optionally, the interframe difference between any two adjacent videoframes in the at least two video frames comprises: optical parameterdifference of pixels at multiple corresponding positions in the twoadjacent video frames. The optical parameter difference of the pixels atmultiple corresponding positions reflects the interframe differencebetween the two adjacent video frames to certain extent, and the opticalparameter difference is easier to capture and quantify, thereby,realizing complexity of the solution is favorably reduced. Optionally,the optical parameters comprise at least one of following: brightness,chroma, and saturation degree; change of the brightness, chroma, and/orsaturation degree can better reflect the interframe difference of twoadjacent video frames. Optionally, the preset condition comprises atleast one of following: a pixel number of the optical parameterdifference exceeding an optical parameter threshold exceeds a pixelnumber threshold; a first specific value of the pixel number of theoptical parameter difference exceeding an optical parameter threshold tothe total number of the single frame pixels exceeds a pixel ratiothreshold; a non-continuously distributed region number of pixels of theoptical parameter difference exceeding an optical parameter thresholdexceeds a region number threshold; a continuously distributed maximalregion area of the pixels of the optical parameter difference exceedingan optical parameter threshold exceeds an area threshold; and a secondspecific value of the continuously distributed maximal region area ofthe pixels of the optical parameter difference exceeding an opticalparameter threshold to a single frame total area exceeds an area ratiothreshold. Above respective preset conditions can be independently usedrespectively, and can be combined for use to better capture and quantifythe interframe difference of two adjacent video frames, and a realizingmanner is very flexible.

Optionally, the interframe difference between any two adjacent videoframes in the at least two video frames comprises: displacement of theat least one display object between the two adjacent video frames. Inthe solution, through the displacement of the same display objectbetween the two adjacent video frames, the movement information of thedisplay object is convenient to capture and quantify, thereby realizingcomplexity of the solution is favorably reduced.

In one optimal realizing manner, the preset condition comprises:expected refreshing information corresponding to displacement exceedsthe refreshing capacity information of the display device. In thesolution, movement information of a display object and the refreshingcapability information are combined to adapt to the display imagedistance of the same display object at different video frames, andimprove adjusting pertinence and effectiveness of the display imagedistance. Further optionally, in this situation, the apparatus alsocomprises a first refreshing information determining module 24 and asecond display control module 25. The first refreshing informationdetermining module 24 is configured to adjust, responding to theexpected refreshing information to not exceed the refreshing capabilityinformation, the refreshing information of the display device accordingto the expected refreshing information and the refreshing capabilityinformation; and the second display control module 25 is configured tocontrol the display device to display the at least one video frameaccording to the adjusted refreshing information. In the solution,through simple adaption of the refreshing information of the displaydevice, the application demand of visual smooth display of the at leastone display object relative to the eyes can be met, eye visualdiscomfort is relieved to some extent or even eliminated, a viewingeffect and user experience are improved, the solution is simple and easyto realize and solution universality is improved.

In another optional realizing manner, the preset condition comprises:the displacement exceeds allowable movement information corresponding tothe refreshing capability information of the display device. In thesolution, the display image distance of the same display object atdifferent video frames can be adaptively adjusted by combining themovement information of the display object and the refreshing capabilityinformation, and the adjusting pertinence and effectiveness of thedisplay image distance are improved. Further optionally, in thissituation, the apparatus also comprises a second refreshing informationdetermining module 23 and a third display control module 27. The secondrefreshing information determining module 26 is configured to adjust,responding to the displacement to not exceed the allowable movementinformation, the refreshing information of the display device accordingto the refreshing capability information; and the third display controlmodule 27 is configured to control the display device to display the atleast one video frame according to the adjusted refreshing information.In the solution, through simple adaption of the refreshing informationof the display device, the application demand of visual smooth displayof the at least one display object relative to the eyes can be met, eyevisual discomfort is relieved to some extent or even eliminated, aviewing effect and user experience are improved, the solution is simpleand easy to realize and solution universality is improved.

FIG. 5 is a structural block diagram of a display device according to anembodiment of the present application, and an example embodiment of thedisplay control device 500 is not limited by specific details of thepresent application. As shown in FIG. 5, the display device 500 maycomprise:

a processor 510, a communication interface 520, a memory 530 and acommunication bus 540, wherein,

the processor 510, the communication interface 520, and the memory 530communicate with one another by the communication bus 540.

The communication interface 520 is configured to communicate with anexternal device with a communication function.

The processor 510 is configured to execute a program 532, andspecifically execute related steps in the embodiments of any method.

For example, the program 532 may comprise a program code, and theprogram code comprises at least one computer operation command.

The processor 510 may be a central processing unit (CPU), or anapplication specific integrated circuit (ASIC) or configured toimplement one or more integrated circuits of the embodiments of thepresent application.

The memory 530 is configured to store the program 532. The memory 530may comprise a random access memory (RAM), and may also comprise anon-volatile memory, such as at least one disk memory. For example, inone optional embodiment, the processor 510 can execute the followingsteps by executing the program 532: acquiring interframe differencesbetween every two adjacent frames in at least two adjacent video framesin sequence of a video; adjusting a display image distance of at leastone video frame in the at least two video frames according to respectiveinterframe differences; and displaying the at least one video frame atleast according to the adjusted display image distance of the at leastone video frame. In other optional embodiments, the processor 510 canexecute the steps mentioned in any other embodiment by executing theprogram 532, which is not repeated herein.

Implementation of each step in the program 532 refers to thecorresponding description of corresponding steps, modules, submodulesand units in foregoing embodiments, which is not repeated herein. Aperson of ordinary skill in the art can clearly understand that forconvenient and brief description, a specific work process of theforegoing devices and modules may refer to the corresponding processdescription in the embodiments of the methods, which is not repeatedherein.

In the foregoing embodiments of the present application, the serialnumber and/or sequence of the embodiments are only intended for theconvenience of description, and do not represent inferiority orsuperiority of the embodiments. The description of each embodiment has adifferent focus. For any part of an embodiment not described in details,refer to relevant description of another embodiment. For relevantdescription of the implementation principle or process of apparatus,device or system embodiments, refer to records of relevant methodembodiments, and the details are not described herein again.

A person of ordinary skill in the art may recognize that, the units,methods and procedures of each example described with reference to theembodiments disclosed herein, can be implemented by electronic hardwareor a combination of computer software and electronic hardware. Whetherthe functions are performed by hardware or software depends onparticular applications and design constraint conditions of thetechnical solutions. A person skilled in the art may use differentmethods to implement the described functions for each particularapplication, but it should not be considered that the example embodimentgoes beyond the scope of the present application.

When the functions are implemented in a form of a software functionalunit and sold or used as an independent product, the functions may bestored in a computer-readable storage medium. Based on such anunderstanding, the technical solutions of the present applicationessentially, or a part thereof contributing to the existing art, or apart of the technical solutions may be implemented in the form of asoftware product. The computer software product is stored in a storagemedium and comprises several instructions for instructing a computerdevice (which may be a personal computer, a server, a network device, orthe like) to perform all or some of the steps of the display controlmethods in the embodiments of the present application. The foregoingstorage medium comprises: any medium that can store program code, suchas a USB flash drive, a removable hard disk, a read-only memory (ROM forshort), a random access memory (RAM for short), a magnetic disk, or anoptical disc.

In the apparatus, method and system embodiments of the presentapplication, apparently, each component (such as a system, a sub-system,a module, a sub-module, a unit, and a sub-unit) or each step may bedecomposed, combined and/or recombined after decomposition. Suchdecomposition and/or recombination shall be considered as an equivalentsolution of the present application. In addition, in the abovedescription of specific embodiments of the present application, afeature described and/or shown in one example embodiment may be used inone or more other example embodiments by using a same or similar manner,combined with a feature of another example embodiment, or replace afeature of another example embodiment.

It should be emphasized that, the term “comprise” used herein refers toexistence of a feature, an element, a step or a component, but does notexclude existence or addition of one or more other features, elements,steps or components.

Finally, it should be noted that, the above example embodiments are onlyused to describe the present application, rather than limit the presentapplication. Various alterations and variants may also be made by aperson of ordinary skill in the art without departing from the spiritand scope of the present application. Therefore, all equivalenttechnical solutions also belong to the scope of the present application,and the patent protection scope of the present application should besubject to the claims.

What is claimed is:
 1. A method, comprising: acquiring, by a systemcomprising a processor, interframe differences between every twoadjacent frames in at least two adjacent video frames in a sequence of avideo; adjusting a display image distance of at least one video frame inthe at least two video frames according to respective interframedifferences of the interframe differences, resulting in an adjusteddisplay image distance of the at least one video frame; and controllinga display device to display the at least one video frame at leastaccording to the adjusted display image distance of the at least onevideo frame.
 2. The method of claim 1, wherein the at least one videoframe in the at least two video frames comprises: at least one formervideo frame in the at least two video frames.
 3. The method of claim 1,wherein the at least one video frame in the at least two video framescomprises: at least one latter video frame in the at least two videoframes.
 4. The method of claim 1, wherein the controlling the displaydevice to display the at least one video frame at least according to theadjusted display image distance of the at least one video framecomprises: controlling the display device to display the at least onevideo frame in a zooming manner at least according to the adjusteddisplay image distance of the at least one video frame.
 5. The method ofclaim 4, wherein the controlling the display device to display the atleast one video frame in a zooming manner at least according to theadjusted display image distance of the at least one video framecomprises: controlling the display device to display the at least onevideo frame in a zooming in manner at least according to the adjusteddisplay image distance of the at least one video frame, and wherein theadjusted display image distance of the at least one video frame islarger than the display image distance before the adjusting.
 6. Themethod of claim 4, wherein the controlling the display device to displaythe at least one video frame in a zooming manner at least according tothe adjusted display image distance of the at least one video framecomprises: controlling the display device to display the at least onevideo frame in a zooming out manner at least according to the adjusteddisplay image distance of the at least one video frame, and wherein theadjusted display image distance of the at least one video frame issmaller than the display image distance before the adjusting.
 7. Themethod of claim 4, wherein the controlling the display device to displaythe at least one video frame in a zooming manner at least according tothe adjusted display image distance of the at least one video framecomprises: determining a zooming ratio parameter of the at least onevideo frame according to the display image distance before, and theadjusted display image distance after, the adjusting of the at least onevideo frame; and controlling the display device to display the at leastone video frame according to the adjusted display image distance of theat least one video frame and the zooming ratio parameter.
 8. The methodof claim 1, wherein the display device comprises a binocular displaydevice, and wherein the controlling the display device to display the atleast one video frame at least according to the adjusted display imagedistance of the at least one video frame comprises: according to theadjusted display image distance of the at least one video frame,adjusting a binary disparity of the at least one video frame displayedby the binocular display device, resulting in an adjusted binarydisparity of the at least one video frame; and controlling the binoculardisplay device to display the at least one video frame according to theadjusted display image distance of the at least one video frame and theadjusted binary disparity.
 9. The method of claim 1, wherein theadjusting the display image distance of the at least one video frame inthe at least two video frames according to the respective interframedifferences comprises: in response to the respective interframedifferences being determined to satisfy a preset condition respectively,adjusting the display image distance of the at least one video frame tocause the adjusted display image distance of the at least one videoframe to be larger the display image distance before the adjusting. 10.The method of claim 1, wherein an interframe difference between any twoadjacent video frames in the at least two video frames comprises: anoptical parameter difference of pixels at multiple correspondingpositions in the any two adjacent video frames.
 11. The method of claim10, wherein an optical parameter of the optical parameter differencecomprises at least one of: brightness, chroma or saturated degree. 12.The method of claim 10, wherein the adjusting the display image distancecomprises adjusting the display image distance in response to therespective interframe differences being determined to satisfy a presetcondition respectively, and wherein the preset condition comprises atleast one of: a pixel number of the optical parameter differenceexceeding a first optical parameter threshold exceeds a pixel numberthreshold, a first specific value of the pixel number of the opticalparameter difference exceeding a second optical parameter threshold to atotal number of single frame pixels exceeds a pixel ratio threshold, anon-continuously distributed region number of pixels of the opticalparameter difference exceeding a third optical parameter thresholdexceeds a region number threshold, a continuously distributed maximalregion area of the pixels of the optical parameter difference exceedinga fourth optical parameter threshold exceeds an area threshold, or asecond specific value of a continuously distributed maximal region areaof the pixels of the optical parameter difference exceeding a fifthoptical parameter threshold to a single frame total area exceeds an arearatio threshold.
 13. The method of claim 1, wherein an interframedifference between any two adjacent video frames in the at least twovideo frames comprises: displacement of the at least one display objectbetween the any two adjacent video frames.
 14. The method of claim 13,wherein the adjusting the display image distance comprises adjusting thedisplay image distance in response to the respective interframedifferences being determined to satisfy a preset condition respectively,and wherein the preset condition comprises: expected refreshinginformation corresponding to displacement exceeds refreshing capacityinformation of the display device.
 15. The method of claim 14, furthercomprising: in response to the expected refreshing information beingdetermined not to exceed the refreshing capacity information, adjustingthe refreshing information of the display device according to theexpected refreshing information and the refreshing capacity information,resulting in adjusted refreshing information; and controlling thedisplay device to display the at least one video frame according to theadjusted refreshing information.
 16. The method of claim 14, wherein thepreset condition comprises: the displacement exceeds allowable movementinformation corresponding to the refreshing capacity information of thedisplay device.
 17. The method of claim 16, further comprising: inresponse to the displacement being determined not to exceed theallowable movement information, adjusting the refreshing information ofthe display device according to the refreshing capacity information,resulting in adjusted refreshing information; and controlling thedisplay device to display the at least one video frame according to theadjusted refreshing information.
 18. An apparatus, comprising: a memorythat stores executable modules; and a processor, coupled to the memory,that executes or facilitates execution of the executable modules, theexecutable modules comprising: an interframe difference acquiring moduleconfigured to acquire interframe differences between every two adjacentframes in at least two adjacent video frames in sequence of a video; adisplay image distance adjusting module configured to adjust a displayimage distance of at least one video frame in the at least two videoframes according to respective interframe differences, resulting in anadjusted display image distance; and a first display control moduleconfigured to control the display device to display the at least onevideo frame at least according to the adjusted display image distance ofthe at least one video frame.
 19. The apparatus of claim 18, wherein theat least one video frame in the at least two video frames comprises: atleast one former video frame in the at least two video frames.
 20. Theapparatus of claim 18, wherein the at least one video frame in the atleast two video frames comprises: at least one latter video frame in theat least two video frames.
 21. The apparatus of claim 18, wherein thefirst display control module comprises: a zooming display controlsubmodule configured to control the display device to display the atleast one video frame according to a zooming at least according to theadjusted display image distance of the at least one video frame.
 22. Theapparatus of claim 21, wherein the zooming display control submodulecomprises: a zooming in display control unit configured to control thedisplay device to display the at least one video frame according to azooming in at least according to the adjusted display image distance ofthe at least one video frame, and wherein the adjusted display imagedistance of the at least one video frame is larger than the displayimage distance.
 23. The apparatus of claim 21, wherein the zoomingdisplay control submodule comprises: a zooming out display control unitconfigured to control the display device to display the at least onevideo frame according to a zooming out at least according to theadjusted display image distance of the at least one video frame, andwherein the adjusted display image distance of the at least one videoframe is smaller than the display image distance.
 24. The apparatus ofclaim 21, wherein the zooming display control submodule comprises: azooming ratio parameter determining unit configured to determine azooming ratio parameter of the at least one video frame according to thedisplay image distance before the adjusting and the adjusted displayimage distance after the adjusting; and a zooming display control unitconfigured to control the display device to display the at least onevideo frame according to the adjusted display image distance of the atleast one video frame and the zooming ratio parameter.
 25. The apparatusof claim 18, wherein the display device comprises: a binocular displaydevice, and wherein the first display control module comprises: a binarydisparity determining submodule configured to, according to the adjusteddisplay image distance of the at least one video frame, adjust a binarydisparity of the at least one video frame displayed by the binoculardisplay device, resulting in an adjusted binary disparity; and a binarydisparity display control submodule configured to control the binoculardisplay device to display the at least one video frame according to theadjusted display image distance of the at least one video frame and theadjusted binary disparity.
 26. The apparatus of claim 18, wherein thedisplay image distance adjusting module comprises: a display imagedistance adjusting submodule configured to adjust, responsive to therespective interframe differences being determined to respectively meeta preset condition, the display image distance of the at least one videoframe to cause the adjusted display image distance of the at least onevideo frame to be larger than the display image distance.
 27. Theapparatus of claim 18, wherein an interframe difference between any twoadjacent video frames in the at least two video frames comprises: anoptical parameter difference of pixels at multiple correspondingpositions in the any two adjacent video frames.
 28. The apparatus ofclaim 27, wherein an optical parameter with respect to which the opticalparameter difference of pixels is determined comprises at least one of:brightness, chroma or saturated degree.
 29. The apparatus of claim 27,wherein the display image distance adjusting module comprises: a displayimage distance adjusting submodule configured to adjust the displayimage distance responsive to the respective interframe differences beingdetermined to respectively meet a preset condition, and wherein thepreset condition comprises at least one of: a pixel number of theoptical parameter difference exceeding a first optical parameterthreshold has been determined to exceed a pixel number threshold, afirst specific value of the pixel number of the optical parameterdifference exceeding a second optical parameter threshold to a totalnumber of the single frame pixels has been determined to exceed a pixelratio threshold, a non-continuously distributed region number of pixelsof the optical parameter difference exceeding a third optical parameterthreshold has been determined to exceed a region number threshold, acontinuously distributed maximal region area of the pixels of theoptical parameter difference exceeding a fourth optical parameterthreshold has been determined to exceed an area threshold, or a secondspecific value of the continuously distributed maximal region area ofthe pixels of the optical parameter difference exceeding a fifth opticalparameter threshold to a single frame total area has been determined toexceed an area ratio threshold.
 30. The apparatus of claim 18, whereinan interframe difference between any two adjacent video frames in the atleast two video frames comprises: displacement of the at least onedisplay object between the any two adjacent video frames.
 31. Theapparatus of claim 30, wherein the display image distance adjustingmodule comprises: a display image distance adjusting submoduleconfigured to adjust the display image distance responsive to therespective interframe differences being determined to respectively meeta preset condition, and wherein the preset condition comprises: expectedrefreshing information corresponding to the displacement beingdetermined to exceed refreshing capacity information of the displaydevice.
 32. The apparatus of claim 31, wherein the executable modulesfurther comprise: a first refreshing information determining moduleconfigured to adjust, responsive to the expected refreshing informationbeing determined not to exceed the refreshing capacity information, therefreshing information of the display device according to the expectedrefreshing information and the refreshing capacity information,resulting in adjusted refreshing information; and a second displaycontrol module configured to control the display device to display theat least one video frame according to the adjusted refreshinginformation.
 33. The apparatus of claim 30, wherein the display imagedistance adjusting module comprises: a display image distance adjustingsubmodule configured to adjust the display image distance responsive tothe respective interframe differences being determined to respectivelymeet a preset condition, and wherein the preset condition comprises: thebeing determined to exceed allowable movement information correspondingto the refreshing capacity information of the display device.
 34. Theapparatus of claim 33, wherein the executable modules further comprise:a second refreshing information determining module configured to adjust,responsive to the displacement being determined not to exceed theallowable movement information, the refreshing information of thedisplay device according to the refreshing capacity information,resulting in adjusted refreshing information; and a third displaycontrol module configured to control the display device to display theat least one video frame according to the adjusted refreshinginformation.
 35. A display device, comprising: a processor, acommunication interface, a memory and a communication bus, wherein theprocessor, the communication interface, and the memory communicate withone another by the communication bus, wherein the memory is configuredto store at least one command, and wherein the command causes theprocessor to execute operations, comprising: acquiring respectiveinterframe differences between at least two adjacent frames in adjacentvideo frames in a sequence of a video; adjusting a display imagedistance of a video frame in the at least two video frames according tothe respective interframe differences resulting in an adjusted displayimage distance of the at least one video frame; and displaying the videoframe at least according to the adjusted display image distance of theat least one video frame.
 36. A computer readable storage apparatus,comprising at least one executable instruction, which, in response toexecution, causes performance of operations, comprising: acquiringrespective interframe differences between every two adjacent frames inadjacent video frames of a sequence of video frames of a video;adjusting a display image distance of at least one video frame in theadjacent video frames according to the respective interframedifferences, resulting in an adjusted display image distance; andcontrolling the display device to display the at least one video frameat least according to the adjusted display image distance of the atleast one video frame.